Polydopamine and NaCl template approach to develop a microporous RuO2@IrOx Core–Shell catalyst for an efficient oxygen evolution reaction in polymer electrolyte membrane water electrolyzers
{"title":"Polydopamine and NaCl template approach to develop a microporous RuO2@IrOx Core–Shell catalyst for an efficient oxygen evolution reaction in polymer electrolyte membrane water electrolyzers","authors":"","doi":"10.1016/j.ijhydene.2024.09.163","DOIUrl":null,"url":null,"abstract":"<div><p>To obtain a stable and active catalyst for the oxygen evolution reaction (OER) in polymer electrolyte membrane water electrolysis (PEMWE), a microporous RuO<sub>2</sub>@IrO<sub>x</sub> core–shell was synthesized using a polydopamine (PDA) coating and a NaCl filler method. A durable IrO<sub>x</sub> shell was homogeneously formed on the surface of the RuO<sub>2</sub> core via impregnation of the PDA coating, which improved the catalytic stability. The NaCl filler created micropores within the nanostructures, increasing the number of active catalytic sites. The strong interaction between the RuO<sub>2</sub> core and protective IrO<sub>x</sub> shell, along with the micropores, significantly improved OER activity, showing an overpotential of 182 mV at 10 mA cm<sup>−2</sup>. Furthermore, a PEMWE exhibited excellent performance, achieving a current density of 1 A cm<sup>−2</sup> at a cell voltage of 1.57 V. These findings provide valuable insights into the potential of RuO<sub>2</sub>@IrO<sub>x</sub> as a robust and efficient catalyst for green hydrogen production.</p></div>","PeriodicalId":337,"journal":{"name":"International Journal of Hydrogen Energy","volume":null,"pages":null},"PeriodicalIF":8.1000,"publicationDate":"2024-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"International Journal of Hydrogen Energy","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0360319924038692","RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
引用次数: 0
Abstract
To obtain a stable and active catalyst for the oxygen evolution reaction (OER) in polymer electrolyte membrane water electrolysis (PEMWE), a microporous RuO2@IrOx core–shell was synthesized using a polydopamine (PDA) coating and a NaCl filler method. A durable IrOx shell was homogeneously formed on the surface of the RuO2 core via impregnation of the PDA coating, which improved the catalytic stability. The NaCl filler created micropores within the nanostructures, increasing the number of active catalytic sites. The strong interaction between the RuO2 core and protective IrOx shell, along with the micropores, significantly improved OER activity, showing an overpotential of 182 mV at 10 mA cm−2. Furthermore, a PEMWE exhibited excellent performance, achieving a current density of 1 A cm−2 at a cell voltage of 1.57 V. These findings provide valuable insights into the potential of RuO2@IrOx as a robust and efficient catalyst for green hydrogen production.
期刊介绍:
The objective of the International Journal of Hydrogen Energy is to facilitate the exchange of new ideas, technological advancements, and research findings in the field of Hydrogen Energy among scientists and engineers worldwide. This journal showcases original research, both analytical and experimental, covering various aspects of Hydrogen Energy. These include production, storage, transmission, utilization, enabling technologies, environmental impact, economic considerations, and global perspectives on hydrogen and its carriers such as NH3, CH4, alcohols, etc.
The utilization aspect encompasses various methods such as thermochemical (combustion), photochemical, electrochemical (fuel cells), and nuclear conversion of hydrogen, hydrogen isotopes, and hydrogen carriers into thermal, mechanical, and electrical energies. The applications of these energies can be found in transportation (including aerospace), industrial, commercial, and residential sectors.